<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- ok  -->
    <!-- 输入一个数字找到他的所有因数 -->
    <script>
        // ok 
        var num = prompt('输入数字');
                        //一直循环到输入的数字
        for (var i = 1 ; i <= num ; i++) {
            if (num % i == 0) {
                console.log(i);
            } 
        }
    </script>
</body>
</html>